Turn signal bulbs - KTM Duke 390 Forum
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post #1 of 12 Old 06-17-2017, 03:43 PM Thread Starter
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Turn signal bulbs

RY10W bulbs are apparently about as common as hen's teeth. Tried every car parts and cycle dealer around, no luck. Called the dealership where I bought it and the parts person had no clue, as the bulb doesn't show up in the microfiche. So, is KTM trying to get me to replace the whole assembly? Ordering these, hope they fit beneath the lenses. Will update

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

[IMG][/IMG]
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post #2 of 12 Old 06-17-2017, 06:51 PM
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Stan, Those bulbs will undoubtedly fit the sockets and I think they will also clear the lenses. However, because of the much lower resistance of LED bulbs compared to incandescent, the OEM bulb flasher will not work correctly - you will get an unacceptably fast flash rate. To complete the switchover to LED, you need to replace the OEM flasher (located under the gas tank just aft of the headstock) with an LED flasher such as this below. I have bulbs and a new flasher on hand, but haven't yet gotten around to changing over. Others on this forum, however, have done this, and are welcome to chime in.

https://www.amazon.ca/Electronic-Fla...4?tag=vig07-20
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Cheers, Will

"If you don't know where you're going, you might wind up somewhere else."
--Yogi Berra

2015 390 Duke
1980 Moto Guzzi V50 II (becoming a cafe racer)
1984 Moto Guzzi SP 1000
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post #3 of 12 Old 06-17-2017, 08:11 PM
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...you need to replace the OEM flasher (located under the gas tank just aft of the headstock) with an LED flasher...
Pulling the tank is the only way to get at said flasher? Anyway to reach the flasher from the underside?
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post #4 of 12 Old 06-17-2017, 09:04 PM Thread Starter
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Seller, manufacturer and buyer reviews claim these work with no other modification. We will see and I will report when I install them. Here's a review:

IntertiaLED CAN Bus LED Lights Review - webBikeWorld
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post #5 of 12 Old 06-18-2017, 09:40 AM
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Wow, nice find, Stan! These bulbs, assuming they work as described, are really a step forward from what has been available up to now. No new flasher required! I'll wait for your ride report, and if they work for you I will have to order a set for my Duke. They are rather expensive, but they look really bright and indestructible! Finding those orange RY10W bulbs is a PITA, and this looks like the solution....
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Cheers, Will

"If you don't know where you're going, you might wind up somewhere else."
--Yogi Berra

2015 390 Duke
1980 Moto Guzzi V50 II (becoming a cafe racer)
1984 Moto Guzzi SP 1000
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post #6 of 12 Old 06-19-2017, 09:07 AM
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Wow, nice find, Stan! These bulbs, assuming they work as described, are really a step forward from what has been available up to now. No new flasher required! I'll wait for your ride report, and if they work for you I will have to order a set for my Duke. They are rather expensive, but they look really bright and indestructible! Finding those orange RY10W bulbs is a PITA, and this looks like the solution....
I found my RY10W bulbs from a BMW dealership locally. The difference is the BAU15s number. The one I got from them didn't have the same BAU number but still worked. They let me test it first before buying it. But those LEDs look great can't wait to hear how they are.
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post #7 of 12 Old 06-19-2017, 11:47 AM Thread Starter
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Unfortunately, no local KTM, BMW, or even Kawasaki (I think some of their bikes use the same bulb) dealers in my area. Giving these a try for increased longevity and brightness. A week or two for delivery, so I'll be using hand signals for a while.
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post #8 of 12 Old 06-22-2017, 10:28 AM Thread Starter
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Received the LEDs yesterday, well ahead of delivery estimate. Took all of 5 minutes to replace the stockers. Before and after pictures:

[IMG][/IMG]

[IMG][/IMG]

Blink rate seems unchanged. Very satisfied.
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post #9 of 12 Old 06-22-2017, 11:05 AM
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Nice, Stan! Those bulbs are on my to-do list. They look wicked bright.
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Cheers, Will

"If you don't know where you're going, you might wind up somewhere else."
--Yogi Berra

2015 390 Duke
1980 Moto Guzzi V50 II (becoming a cafe racer)
1984 Moto Guzzi SP 1000
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post #10 of 12 Old 06-22-2017, 02:31 PM
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Here's a cheaper option, with a bit less lumen output (6000 in white:

Wiseshine ry10w py21w 7507 5009 1156py s25 canbus turn signal led bulb DC9-30v 3 years quality assurance (pack of 4) bau15s 11smd 5630 Yellow


Under $30, for four. I'll post a review when I get them installed.

Dang, the fonts are not cooperating. Search that title for the link, it was on Amazon.

Lighter makes it righter!
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